axiom-developer
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Axiom-developer] [#167 Infinite Floats Domain]


From: wyscc
Subject: [Axiom-developer] [#167 Infinite Floats Domain]
Date: Sun, 17 Jul 2005 14:50:06 -0500

Changes 
http://page.axiom-developer.org/zope/mathaction/167InfiniteFloatsDomain/diff
--

??changed:
-However, in my view, this still is not infinite precision in the sense of that 
$2^(-35) + 2^34$ will not compute exactly because the system does not 
*automatically* increase precision in 'FLOAT' (it won't, even using macros).  
But one *can* compute it by *manually* increasing the precision (which 
precision is by no means obvious). Compare this with 'FRAC INT' where there is 
no need to manually increase the length of integers in numerators or 
denominators. Floating point systems are designed to compute only significant 
digits.
However, in my view, this still is not infinite precision in the sense of that 
$2^{(-35)} + 2^{34}$ will not compute exactly because the system does not 
*automatically* increase precision in 'FLOAT' (it won't, even using macros).  
But one *can* compute it by *manually* increasing the precision (which 
precision is by no means obvious). Compare this with 'FRAC INT' where there is 
no need to manually increase the length of integers in numerators or 
denominators. Floating point systems are designed to compute only significant 
digits.

--
forwarded from http://page.axiom-developer.org/zope/mathaction/address@hidden




reply via email to

[Prev in Thread] Current Thread [Next in Thread]